Extreme Heat Warning Issued for Los Angeles and Ventura Counties Through Friday

Alert Details

The National Weather Service in Los Angeles/Oxnard CA has issued an Extreme Heat Warning (NWS Alert Code: XHW) for a significant portion of southwest California. This alert follows an initial Heat Advisory as temperatures are expected to climb to dangerous levels throughout the week.

Affected Areas

The warning covers a broad geographic range including:

• Los Angeles County: Inland Coast including Downtown Los Angeles, Santa Clarita Valley, San Fernando Valley (Western and Eastern), San Gabriel Valley, Calabasas, Agoura Hills, and the Santa Monica Mountains Recreational Area.
• Ventura County: Central and Southeastern Valleys, Ojai Valley, Lake Casitas, and the Santa Susana Mountains.
• Mountain Regions and Corridors: Santa Lucia Mountains, San Luis Obispo County Mountains, Santa Ynez Mountains (Western and Eastern Ranges), Santa Barbara County Interior Mountains, Southern Ventura County Mountains, the Interstate 5 Corridor, and the San Gabriel Mountains (Western and Eastern) including the Highway 14 Corridor.

What You Should Do

Residents are urged to take the following safety precautions to mitigate the risk of heat-related illness:

• Drink plenty of fluids and stay hydrated.
• Remain in air-conditioned rooms whenever possible.
• Stay out of the direct sun and wear lightweight, loose-fitting clothing.
• Check up on relatives and neighbors, especially the elderly.
• Limit strenuous outdoor activities to the early morning or evening hours.
• Monitor for symptoms of heat exhaustion and heat stroke; take immediate action if symptoms appear.

Expected Conditions

• Temperatures: During the Heat Advisory phase, temperatures are expected to range between 90 and 98 degrees. During the Extreme Heat Warning phase, dangerously hot conditions will see temperatures rise to between 96 and 104 degrees.
• Impacts: There is a high risk for dangerous heat illness for the general population, with increased vulnerability for the very young, the elderly, those without access to air conditioning, and individuals active outdoors.

Timeline

• Heat Advisory: Effective from 10:00 AM Monday to 10:00 AM PDT Tuesday.
• Extreme Heat Warning: Effective from 10:00 AM Tuesday to 8:00 PM PDT Friday.